Yahoo! Messenger 9.0 Vista Edition for XP and Vista XP users will need Microsoft .NET Framework 3.0 or higherfor sidebar gadget (vista users) run Yahoo!Messenger Gadget.exe fromC:\Program Files\Yahoo!\Messenger (default) what do you mean by fake it works on my pc that running xp you will need.net framework 3.0 .net framework 2.0 will not work